_.currentSlide can't be decimal value 
_.currentSlide can't be decimal value 

when we refresh we sometimes get a decimal value here if _options.slideToShow is a decimal value rather than integer value. i.e 4.45 vs 4.
yorimontolalu/slick,wc-matteo/slick,rphelan/slick,kenwheeler/slick,kenwheeler/slick,yorimontolalu/slick,yorimontolalu/slick,wc-matteo/slick,wc-matteo/slick,simeydotme/slick,kenwheeler/slick,rphelan/slick,flaviocysne/slick,flaviocysne/slick,cielt/slick,cielt/slick,simeydotme/slick,cielt/slick,flaviocysne/slick